Dual pump



FIG. 1 is a perspective view of a dual pump showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view thereof.

Those portions of the drawings shown in broken or ghosted lines form nopart of the claimed design.

CLAIM The ornamental design for a dual pump, as shown and described.